Oil pump



A. W. F. MANZEL OIL PUMP 2 sheets sheet 1 Filed June 4. 1921 April '19, 1927.

WITNESS the parts are readily accessible and inter Patented A r, 19, 1927.

ADOLP H -W. I. MANZEL, OF BUFFALO, NEW YORK, ASSIGhTOR TO MANZEL BROS. 00.,

0F serrate, mzw yorug, A CORPORATION or NEW YORK.

on. some.

Application filed June 4,

My invention relates to oil pumps, and more particularly -to what may be termed multiple-feed oil-pumps.

My invention has for its object the provision of a multiple-feed oil-pump of simple and inexpensive construction; one which is highly eflicient in operation and in which changeable.

Another object of my invention is the provision of a pum of this type having a plurality of oil-fee ing devices adapted to lubricate different parts of a machine, said devices being operated simultaneously by a single reciprocable operating element for feeding a full charge of oil during each cycle of movement of said element.

Another object of my invention is the provision of a multiple-feed oil-pump in which the oil-feeding devices are actuated simultaneously by a single rectilinearly movable element havin an area suflicient to cover and en age al feeding devices simultaneously, an which single element is operated by a rotatable element.

A further object of my invention is the; provision of a multiple-feed oil-pump in which a plurality of feeding devices is employed and the feeding devices thereof constructed to feed diflerent quantities of oil in accordance with the requirement of the parts lubricated thereby;

A further object of my invention is to provide a multiple-feed oil-pump having a plurality ofoil-feeding devices and a single operating element for simultaneously actuating-all oil-feeding devices; also to provide a multiple feed oil-pump adapted for oilin various journals and other movable parts 0 an automobile from a point within convenient reach of the operator or driver.

A still further object is to provide a multiple-feed oil-pump with actuating means and an operating element forsaid actuating means movable in one direction to feed a full charge of oil from each oil .feeding device of said oil-pump at a single stroke of said operating element.

A still further object of my invention is to provide an oil-feeding device 'in which leakage of oil is prevented when the parts thereof are in normal position.

With the above and other objects in view, the invention consists in an oil pump having a plurality of oil feeding devices, a single 1921. Serial No. 475,130.

"rocating movement, and means interposed between said operatin element and said oil feeding devices where y a full charge of oil is fed from each of said feeding devices during one-half of the reciprocating movement of said operating element.

It further consists in an oil pump having an oil-feeding device and means for operating the same so related to said oil-feeding device that when the parts are in normal position, no oil can be discharged or leak from said oil-feeding device.

It further consists in the novel features of construction and in the arrangementand combination of parts to be hereinafter described and more particularly pointed out in the subjoined claims.

In the drawings Fig. 1 represents a diagrammatic view of an oiling system for automobiles showing the application of my improved oil pump thereto, said pump and the several parts constituting the oiling system being shown it is especially designed for lubricating various journals, bearings, and other movable parts of an automobile including parts of the motor, if desired, and the application of the pump to an automobile shown in the drawings is merely representative of one of the uses for which the pump is adapted.

Referring to the drawings in detail like numerals of reference refer to like parts in the several figures.

their upperends with inturned flanges12,

reinforced by a rectangular open member 13 applied to the under sides of said inturned flanges and spot welded or otherwise fastened thereto.

The casing is provided with suitable,

brackets 1-1 which are secured to the front of the dash 15 of an automobile by means of bolts 16, or otherwise. 17 designates the cowl of the automobile underneath which my improved oil-pump is arranged, and 18 is the usual instrument board with which automobiles are provided, said board being spaced from the dash, as clearly shown in Fig. 3.

19 designates a \"ertically-disjpsed plunger-guide provided with a bore 20, which is preferably cylindrical, the lower end of said guide being reduced in diameter and externally threaded, as at 21. Said reduced portion extends through an opening 22 provided in the bottom of the casing or receptacle and a nut 23 is threaded onto said reduced portion to securely fasten said plunger guide in said bottom in a liquidtight manner. Said plunger guide therefore extends upwardly into the casing from the'bot-tom thereof and at or near the lower end of its bore it is provided with an oil opening 25 which connects the interior of the plunger guide with the oil space in said casing.

Fastcned to the upper side of the removablecover 11 is a bearing member 26,which comprises a flat horizontal portion 27 and spaced upstanding flanges 28. The means for fastening said bearing member to the cover may be varied, but in the drawings I have shown screws 29 passed through the flat horizontal portion of said bearingmembers and threaded into the coverf The cover is fastened to the int'urned flanges 19 of the side and end walls by means of screws 30 passed through the marginal portions of said cover and threaded into said flanges and, if desired, into the rectangular open reinforcing member 123. If desired, suitable packing may be provided between said inturned flanges and cover. v

Slidable within the plunger-guide 20 is a master plunger 31, which has a reduced upper end 32 slidable through the cover 11 and the horizontal portion of the bearing member 26. Said reduced upper end 32, which may be termed a plunger rod, ex-

tends upwardly into the space between thetwo spaced upstanding flanges 28 of-said bearingmember and it isexternally threaded adjacent the plunger 31, as at 34 designates an act-uatingielement or member, preferably in the form of a flat piece of metal of rectangular formation. Said actuating element has a reinforcing member 35 spot welded or otherwise fastened to its upper side, which member has stiffening; flanges 36 along opposite longitudinal margiral portions; The actuating element 34 and the reinforcing member 3.) has the threaded portion 83 of the plunger rod 32 extending through openings therein, and the upper end of the plunger 31 proper bears against the under side of said actuating member. A nut 37 is threaded onto the threaded portion of said plunger rod and bears firmly against the upper side of the reinforcing member 35 so,as to securely fasten the actuating element 34 and its reinforcing member 35 to the. plunger.

The cover 11 is provided with a filling opening 38 which is closed by a screw plug 39, and formed through one of the side walls of the casing is a drain opening 41, which is closed by a screw plug 42.

4:3 designatesoilfeeding devices, which may be varied in number, depending on the requirements of the pump. Said oiling devices may also be arranged within the casing or receptacle 7 in any desired manner. In the particular pump illustrated there are ten such devices arranged in two paral lel rows at opposite sides of the master plunger 31. Each oil-feeding device comprises a cylinder 44, a plunger slidable within said cylinder, and a check-valve casing {l6 having a check valve and associated part therein, to be hereinafter described.

Each check-valve casing has an intermediate polygonal portion 47 and reduced 0X- ternally-threaded end portions 48, the upper end portion of each check-valve casing extending into the casing or receptacle '7 through an opening 49 in the bottom 10.

Each cylinder 44. has a plunger-bore 50 in which its co-acting oil-feeding plunger 45 is arranged for reciprocating movement and the lower end of each cylinder is internally threaded to receive the upper threaded end portion 48 of its co-acting checkvalve casing 46,-such check-valve casing being threaded into said cylinder by means of a wrench or other suitable tool applied to the polygonal intermediate portion 47 an enlargement or head 51, and sprrounding the plunger between said head and the upper end of the co-acting cylinder 44 is an expansion spring 52,- one end of said spring bearing against the under side ot' said enlargement or head and the-other end thereof bearing'against the upper end of said cylinder. It is of course to be understood that all oil-feeding plungers 45 are provided with such expansion springs,

andconsequently the actuating member 34,.

against which the heads of said plungers bear, is at all times sutnected to the combined pressure ,of said springs, while the upper end of the plunger rod,32 bears againsta movable part of the pump, to'bc presently described.

, Each check-valve casing is provided with a longitudinal .bore 53 and an oil-inlet 54 coaxial with but smaller than said bore and opening thereinto, thus forming a downwardly facing shoulder at the upper end of the bore which serves as a valve seat. Within said longitudinal bore a check-valve 56 -is arranged, said valve being preferably spherical and adapted to close the 011 Inlet 54, it being normally retained n closing position against the valve seat by an expansion spring 57 within said longitudinal bore,

one end of which spring bears against said check-valve and the other end against an abutment 58 threaded into the check-valve casing from its lower end and having an opening therethrough for the passage of oil..

The degree of tension of the expansion spring 57 may be regulated by the abutment 58. v

Each plunger cylinder 44 is provided with an oil inlet 59 which connects the interior of the casing or receptacle with the bore of said cylinder; and attention is here directed to the fact that the oil inlets of the plunger cylinders 44 may be all arranged at the same hei ht or at different heights; or

more particu arly, ,at the same or different distances from the oil-inlets 54 of the check valve casings. In Figs. 2 and 3 the oil-inlets 59 are shown in different horizontal planes, and normally the parts are so arranged that the lower ends of the plungers which are of equal lengths, are in the same horizontal plane beneath the oil-inlets 59, but some of them are at difierent distances from the 1 lowermost oints of the oil-inlets 59 of the plunger cy inders than others, due to said oil-inlets being in different horizontal planes;

Arranged in the instrument board 18 of the automobile is a guide bushing 60, and alined-therewith in the dash 15 is a vertically-disposed guide slot 61. The bushing 60 has a reduced threaded portion 62 proiecting" through the instrument board and it is provided with an oppositely flared f bore, and threadedonto said projecting portion is a nut 63 whereby said bushing 60 isv securely fastened in said board. An operating element 64,-.in the form of a rod,.is guided for movement in said guide bushing 60 and guide slot 61, it having an enlargement or head 65 at its rear end which serves as a handle and normally bears, against the rear end of said guide bushing. The front end of said operating element or rod "64 is bent at a right angle, as at 66, and passed through a cam lever 67 having a cam 68 at itslo'wer end, said cam being 'r0tatable,. with or on a spindle -or pivot 69 carried by the rod 32 and a curved actuating surface 71 meeting said flat retainer surface.

Connected in a liquid-tight manner to the check-valve casings 46 are oil-feeding tubes 72, which may lead to various parts of an automobile or othermachine requiring lubrication. In the diagrammatic view shown in Fig. 1, some of these tubes are led directly to theparts or points to be oiled, while others are led to distributers 73. From each of said distributers, oil-feeding tubes 74 are ledto a plurality of points to be lubricated. I have not considered-it necessary to illustrate the distributers in detail, as the same form no part of this invention, but are the subject of my co-pending application, Serial No. 475,129. 5

When the flat retainer surface 70 of'the cam 68 bears against the upper end of the.

plunger rod 32, the oil-feeding plungers 45 will be in their lowermost positions, in which positions-they fully close;the oil-inlets 59 of their surrounding cylinders, and thus prevent the entrance of any foreign matter to said cylinders and the check-valves associated therewith when the pump is not in operation. In this manner the possibility of foreign matter lodging between the check valves 56-and their seats is reduced to the minimum, it not entirely eliminated, thereby preventing the continual feeding of oil into the tubes 72. This is a desirable feature of my invention, as experience has disclosed the fact that an improperly seated check valve will permit oil to flow through the tubes and drip from the automobile at the points oiled by the tubes, which is 'particularly objectionable when the automobile is in standing position and especially when in a garage.

In Fig, 3 of the drawings I have illus trated, in dotted lines, the extreme rear or partly actuated position, of the operating ele-' ment or rod 64 also the corresponding position of the cam 68, the actuating element 34 and master plunger 31 with its rod 32. From this, it will be apparent that when drawing said operating element or rod 64 rearwardly,

' the cam 68 will be rotated in one direction onor with its spindle or pivot, as the case may be, through the actuation of the cam lever 67 of which it forms an integral part;

' and during such rotary movement of the cam, the flat retainer surface 70thereof will leave the upper end of the plunger rod 32 while the curved actuating surface 71 of said cam will come in'contact therewith and on account of, its receding curvature will permit said rod and parts connected therewith to ri:e; therising movement of such parts being effected by the expansion springs 52? The action of the springs 52 will necessarily raise the oil-feeding plungers 45, since the heads or enlargements at the upper ends of the latter bear aga nst the under side of the actuating element 34 and cause the same to rise. During such action the master plunger is moved upwardly in the plunger guide 20, allowing oil to enter the oil opening in said guide. The upward movement of the oil-feeding plungers will be sufficient to position the lower ends of said plungers above the oil inlets 59'therein or at least above thelowermost points of said inlets so as to 'permit the oil to enter the plunger cylinders 44and entirely fill the spaces between the lower ends of the oil-feeding plungers and the check valves 56 associated therewith.

' The outward movement of the operating element or rod 64 rcarwardly merely places the parts in what may be termed forcing position, and during the forward movement of said operating element or rod, a reverse action of the parts takes place and consequently the oil within the cylinders 44. will be forced out throughthe check-valve casings 46 and into the oil-feeding tubes 2, the pressure created by said oil-feeding plungers against the oil within the cylinders 44 being sufiicient to overcome the action of the expansion spring 52 within the check-valve casings, thus moving the check valves 56 downwardly away from the inlets 54 and forcing oil in largement or head at the rear end of saidv operating element or rod will be in contact with the rear end of the guide bushing 60, and as the springs around the plungers of the oil-feeding devices cause said plunger rod to be retained in firm contact with the force out oil from the cylinders 44 through the oil-inlets 59 in said cylinders, the oil escaping from said cylinders into the casing or receptacle '5 until the lower ends of the plungers completely closev said inlets, after which the oil within the cylinders will be forced through the check valve casings 46 and into the tubes 72.

Before the pump is used for oiling the various parts of an automobile or other machine, the oil feeding tubes 72 will have to be filled with oil, and this may be accomplished in any suitable manner, but can be conveniently-done by operating the pump a sufficient number of times successively, and thereafter any pressure on the oil or col umns of oil within said tubes created by a single reciprocating operation of the operatr ing element or rod 64 will result in a predetermined quantity of oil being fed to the parts lubricated, the pie-determined quantity for each point to be lubricated being determined by the relative position of the associated oil feeding plunger 45 and the oil inlet 59 in its co-acting cylinder 44.

In the oil-feeding device 43 at the left of Fig. 3, the oil-inlet 59 is closer to the check-valve 56 of the device than the oilinlet 59 is to the check-valve 56 of the oilfee'ding device at the right, and consequently the plunger 45 of the oil feeding device at vthe right will close the oil-inlet 59in its co-acting cylinder 44 earlier in its downward stroke than the plunger 45 at the left will close the oil-inlet in its co-acting cylinder, with the result that a larger quantity of oil will be fed by the oil-feeding device at the right than by the oil-feeding device at the left. Itis apparent therefore that with exception ofthe location of the oil-inlets 59 in the cylinders 44, all parts of the oil-feed ing devices 43 are exact counterparts and therefore interchangeable, and when manufacturing these pumps, the oil-inlets 59 are drilled or otherwise formed in the cylinders 44 at different points so that cylinders may be selected and positioned within the casing or receptacle 7. of the pump having the exact oiling capacity required by the particular part to be lubricated, which may vary from the capacity of other cylinders or all of the other cylinders within the casing. The relation of the lower end of the plunger to the oil-inlets 59 of a cylinder therefore determines the quantity of oil to be fed by each oil-feeding device. V

Having thus described my invention, what I claim is l l. A multiple-feed oil-pump, comprising an oil receptacle, oil-feeding devices within said receptacle and connected to points exterior thereof, a single reciprocating actuatingelement operating said oil-feeding devices in unison, a reciprocating operating element, and means interposed between said operating-element and said actuating-element for operating the latter when reciprocating said operatingrlement, each of said oil-feeding devices feeding a full charge of oil during the movement of said operating-element in one direction.

2. The combination with an automobile having a dash, of 'a multiple-feed oil-pump at one side of said dash and comprising an oil receptacle, a plurality of oil-feeding dedevices, an operating-element extending through said dash and being accessible from the interior of the automobile, and means interposed between said operating-element and said oil-feeding devices for operating the latter in unison.

3. The combination with an automobile having a dash and an instrument board, of a multiple-feed oil-pump at one side of said dash comprising, an oil receptacle, a plurality of oil-feeding devices within said oil receptacle, an operating-element extending rearwardly.through said dash and instrument board to be operated from the interior of the automobile, and mechanism interposed between saidoperating-element and said oilfee'ding devices.

4. A multiple-feed oil-pump, comprising an oil receptacle, a plurality of oil-feeding devices within said receptacle arranged to feed to the exterior thereof and disposed in difi'erent planes in two directions, an actuating element arranged for reciprocating movement to actuate said oil-feeding devices, and means to operate said actuating-element.

'5. A multiple-feed oil-pump, comprising an oil receptacle, a plurality of oil-feeding devices within said receptacle arranged to feed oil to the exterior thereof, a single actuatingelement co-acting with said oil-feeding devices and causing actuation of the latter in unison, an operating-element arranged for reciprocating movement, and means interposed between said operatingelement and said actuating-element to cause operation of the latter, said interposed means moving said actuating-element in one direction to cause a full charge of oil to be fed from each oil-feeding device during the movement of said operating-element in one direction.

6. A multiple-feed oil-pump, comprising an oil receptacle, oil-feeding devices within said receptacle and adapted to feed oil to the exterior thereof, vertically-reciprocating actuatinganeans, and a reciprocating operating-element movable at an angle to said actuating-means and operatively related to the latter and by means of which said actusting-means is moved in one direction to feed oil from said oil-feeding devices when movin said operating-element in one direction.

A multiplefeed oil-pump; comprising an oil receptacle, a plurality of oil-feeding devices within said receptacle and arranged to feed oil to the exterior thereof, a vertically -movable actuating device co -acting with all of said oil-feeding devices to operate the same in unison, a cam rotatably mounted on said receptacle and adapted to operate said actuating-device, a lever extending from said cam, and an operating rod pivotally connected to said lever and movable at an angle to said actuating'device.

S. A multiple-feed oil-pump, comprising an oil receptacle, a plurality of oil-feeding devices within said receptacle, a plungerguide also within said receptacle, a plunger slidable within said plunger-guide co-acting with said oil feeding devices, and actuating element positioned over all of said oilfeeding devices and secured to said plunger, and means for actuating said plunger.

9. A multiple-feed oil-pump comprising an oil receptacle, a plurality of oil-feeding devices within said receptacle arranged in different planes in two directions, a fiat actuating-element lying in contact with all of said oil-feeding devices and actuating the same to the same extent, means for guiding said actuating-element for vertical movement, and means for operating said actuating-element.

10. In an oil pump, a receptacle, a cover detachably applied to said receptacle, oilfeeding devices within said receptacle, a cam journaled for rotary movement on said cover, means for operating said cam, and an actuating-device adapted to operate said oil-feeding devices in unison and having a portion extending upwardly through said cover and in engagement with said cam.

11. A multiple-feed oil-pump, comprising a receptacle, a-plurality of oil-feeding devices in said receptacle, an actuating-element for operating saidoil-feeding devices in unison, a rod extending upwardly rom said actuating-element and pro 'ng through the top of said receptacle, a cam rotatably supported on said top and having a flat retainer surface and a curved actuating surface trending into said flat retainer surface, said flat retainer surface being nor mally in engagement with said rod, and means for actuating said cam from a distant point.

12. A multiple-feed oil-pump, comprising a receptacle, check-valve casings having check valves therein extending through one of the walls of said receptacle and having their inwardly-extending portions externally threaded, plunger-cylinders threaded onto said check-valve casings, plunger-s slidable in said cylinders, means for normally 1;

ing said plungers in actuated positions, including a reciprocating operating element,

. and springs for raising said plungers when said operating element is moved in one direction.

' 13. A multiple-feed oil-pump, comprlsmg a receptacle, oil-feeding devices within said receptacle, a plunger-guide also withinsaid a receptacle'having a top, a bearing member fastened to said top and having spaced upstanding flanges, a cam'rotatably mounted between said flanges, a plurality of oil-feeding I devices within said receptacle, an actuatingelement adapted to operate said oil-feeding devices and having a projection extending upwardlyinto the space between said upstanding flanges in engagement with said cam, and means for operating said cam.

15. An oil pump having a plurallty of oil-feeding devices, each device comprising a cylinder having an inlet-opening, means to prevent the flow of oil from sald cylinder, and a plunger reciprocable within said cylinder, the bottoms of the inlet openings of different cylinders being spaced difi'erent distances from the normal positions of the ends of said plungers.

16. An oil-pump comprising an o1l r eceptacle, and two oil-feeding devices within said receptacle adapted to feedoil to the exterior of said receptacle, each oil-feeding device comprising a check-valve, a cylinder having an inlet opening, and a plunger movable Within said cylinder, the inlet opening of one of said cylinders being closer to said checkevalve than the other.

17. An oil-pump comprising an oil receptacle, and a plurality of oil-feeding devices within said receptacle, each oil-feeding device comprising a cylinder having an oil 'inlet,'an oil outlet, and a plunger movable- Within said cylinder, the plungers of all oilfeeding de vices having their inner ends in the same plane, and the oil-inlets of the cylinders being different distances from the outlets thereof.

- 18. An oil-pump comprising an oil receptacle, a plurality of oil-feeding devices Within said receptacle arranged in different planes in two dircctioii' sgf each oil-feeding device 4 comprising a cylinder having an inlet and an outlet, a plunger movable within said cylinder provided with an enlargement at its upper end and a spiral spring surrounding each plunger and bearing with one end against the enlargement thereof and with actuating said plungers in unison, a plungerguide,a master plunger movable Within said plunger-guide and to which said actuatingelement is secured, positive stops for limiting the upward and downward movements of said actuating-element and said master plunger, and means including one of said positive stops for operating said actuating element.

said oil-feeding devices upon operation of,

said cam, andmeans for operating said cam.

21. An oil-pump comprisin an oil receptacle, a cover removably app led. to said oil receptacle, a bearing member secured to said cover and having a pair of upstanding flanges, a spindle supported by said flanges, a cam on said spindle, means for causing rotationof said cam, an oil-feeding device within said oil receptacle, and means interposed between said cam and said oil-feeding device for actuating the latter upon operation of said cam. 22. An oil-pump comprising an oil:receptacle, a plurality of oil-feeding devices Within said receptacle,v an actuating-element comprising a flat member adapted to actuate said oil-feeding devices in unison, a flat re-. inforcingmember lying againstthe upper side of said flat actuating member and havoperating said actuating member to cause said oil-feeding devices to feed pre-deter- 'mined quantities of oil.

23. A. multiple-feed oil-pump comprising an oil receptacle, and oil feeding devices Within said receptacle, each oil feeding de- 20. An oil-pump comprising an oil recepplunger or plungers within another or other cylinders.

24. A multiple-feed oil-pump comprising an oil receptacle having two oilfeeding devices, each oil-feeding device having a plunger-cylinder and a plunger in said cylinder, means for imparting corresponding movements to said plungers, each plungercylinder having an oil-inlet and an outlet, the inner ends of said plungers normally being positioned different distances from the oil-inlets in the plunger-cylinders to vary the amount of oil fed from said oil-feeding devices.

25. A multiple feed oil-pump having a plurality of oil-feeding devices, each oilfeeding device including a plunger-cylinder having an oil inlet and an outlet and a plunger movablewithin said plunger-cylinder, the oil inlet or inlets of one or more of said cylinders being at a different point or points with respect to the outlet or outlets of said cylinder or cylinders than the ail inlets of the remaining cylinder or cylin ers.

26. A multiple-feed oil-pump having a plurality of oil-feeding devices, each oilfeeding device including a plunger-cylinder having an oil inlet and an outlet, and a plunger movable Within said plunger-cylinder, said cylinders being interchangeable and the oil inlet or inlets of one or mbre of said cylinders being at a different point or points with respect to the outlet or. outlets of said cylinder or cylinders than the-oil inlet or inlets of the remaining cylinder or cylinders.

27. A multiple-feed oil-pump comprising a plurality of oil-feeding devices, each oilfeeding device having a cylinder provided with an oil-inlet and an oil-outlet, and a plunger slidable in each cylinder, the plungers of said oil-feeding devices closing the oilinlets to said cylinders when in normal position and means to move said plungers idly outwardly and then inwardly to andbeyond said oil-inlets to feed oil through said outlets, the effective portions of the inward movement of certain of said plungers being greater than those of the remaining plungers and the range of movement of all of said plungers corresponding.

In testimony whereof I aflix my signature.

ADOLPH W. F. MANZEL. 

